Heart-shaped fastener



FIG. 1 is a perspective view of a heart-shaped fastener showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a side elevational view;

FIG. 5 is a top plan view; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for heart-shaped fastener, as shown and described. 